High energy optically pumped NH3 terahertz laser with simple cavity
Chinese Optics Letters, Vol. 8, Issue 4, pp. 411-413 (2010)
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Abstract
A high energy pulsed terahertz (THz) laser is studied experimentally. The laser cavity simply consists of a quartz glass waveguide, a coated GaAs input window, and a crystal quartz output window. NH3 is filled in the cavity as gain medium, and pumped by an 8-J line-tunable transversely excited atmospheric (TEA) CO2 laser. When 9R(16) transition acts as the pump line, 55.6-mJ THz radiation (90 \mu m) is obtained at 730-Pa NH3 pressure. The corresponding conversion efficiency is 13.54%. Energy and optimal pressure of amplified spontaneous emission and laser oscillation are compared.
© 2010 Chinese Optics Letters
OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.4130) Lasers and laser optics : Molecular gas lasers
(140.6630) Lasers and laser optics : Superradiance, superfluorescence
Citation
Liang Miao, Duluo Zuo, Zhixian Jiu, Zuhai Cheng, Chunchao Qi, and Junzhu Wu, "High energy optically pumped NH3 terahertz laser with simple cavity," Chin. Opt. Lett. 8, 411-413 (2010)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-8-4-411
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